Drop wrapper used in one place.  gfx_v9_4_3_xcc_cp_enable()
is used in one place.  gfx_v9_4_3_xcc_cp_compute_enable()
is used everywhere else.
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>